Stave planer cutter head



Dec. 1, 1931. E. R. NORTON ET AL STAVE PLANER CUTTER HEAD Filed Oct.

2 Sheets-Sheet 1 In veniors .EEflriozz A J 06/31 m E. R. NORTON ET ALSTAVE PLANER CUTTER HEAD Dec. 1, 1931.

Filed 001;. 15, 1950 2 Sheets-Sheet 2 Inveni ons" 12 flri'on Jfifjtweeler K Allomcy Patented Dec. 1, 1931 EDWARD niivonronnunnmos G.WHEELER, or rrnn BLUFF, ARKANSAS s'rnvn rLANnn CUTTER HEAD 2 Applicationflle'doctober 15, 1930; seriarno. 488,906.

T his invention relates to'barrel stave planing machines generally andmore particularly to a cutter head for machines of this character but itis to be understood, of course, that a cutter head in accordance withthis invention may be used in connection with any type of woodworking orother machines for which the same is found adapted and desirable.

An important object ofthe invention'is to provide, in a manner'ashereinafter set forth, a cutter headfor barrel stave planing ma-- chinesembodyinga novel construction and arrangement of knives together withnovel means 'forfriction'ally' clamping the knives in position for use.

Other objects of the invention are to provide a cutter head of thecharacter described which will be simple in construction, strong,

durable, eificient in operation and which may be manufactured at lowcost.

All of the foregoing and still further objects and advantages of theinvention may become apparent from a study of the follow- F ingspecification, taken in connection with the accompanying drawingswherein like characters'of reference designate corresponding partsthroughout the several views, and

wherein Figure 1 is a view in front elevation of a 7. portion of a staveplaning machine showing a cutter head constructed in accordance withthis invention mounted in position thereon. Figure 2 is a view in frontelevation of a cutter head in accordance with this invention to be usedfor planing the outside of the staves.

Figure 3 is a top plan view of the form of the invention illustrated inFigure 1 which is for use in planing the inner side of the staves. I

Figure 4 is a fragmentary sectional view through the head used forplaning the'inner side of the staves and showing aknife mounted thereon.

Figure 5 is a fragmentary sectionalview through the cutter head which isused for planing the outside of the staves and showing a knife inposition thereon.

Figure 6 is a vertical transverse sectional view takensubstantially onthe line 66 of Figure 3. Y

Referring tothe drawings in detail, it will i be seen that thereferencenumeral 1 designates generally the upper front frame portion ofa conventional barrel stave planing machine in whichis journaledtransversely a shaft 2havin'g one end projecting laterally of the frame1' and having fixed thereon a pulley 3 forreceiving a. suitable drivebelt (not shown) for operating the shaft 2 from a suitable source ofpower. As seen in Fig-f ures 1, 3, 4 and 6 of thedrawings, a con-' vexedhead 4 is mounted'in any suitable way 7 on an intermediate portion ofthe shaft 2 and is providedwith theintegral, reduced extensions 5 at itsends. v

'Circu'mferentially spaced channels 6 exi tend longitudinally from endto end of the outter head 4 and said channels have their inner wallsprovided, on one side, with longitudinally extending grooves 7 which areco extensive with the channels 6. Each channel 6 is further providedwith a shallow groove having one side opening outinto the groove 7 andits'other side forming a shoulder 8 at its junction with" theremainingzpart of the inner wall of the channel. As clearly seen inFigure 6 of; the drawings, the shouldersv8 are. disposedflintermediatethev planes of the bottom or inner walls of the channels 6 and thebottom walls of thegrooves 7. a The channels 6 are disposed on centerwith respect to the lateral axis of the cutter head 4.

A knife 9 is' disposed longitudinally "in each of the grooves 7 inabutting engagement with the adjacent side of the channels 6 and saidknives 9 are provided witha convex cutting edge 10 which projects beyondthe periphery'of the cutter head 4. The cutting edgelO of eachknifeconforming substantially to the contour of the cutter head 4. "Itwill be noted that the arrangement of the channels 6 in the cutter head4 issuch that the walls of said channels against which the I knives 9are disposed are terminated inwardly ofjthe outer ends of the oppositewalls of the channels6. Pressure plates 10 are disposedin the channels 6for abutting en gagement with the knives' 9 with theirinner edgeslocated in the shallow groove with the shoulders 8 acting as means forlimiting the outward movement of the plates and each of cure the knives9 in position are z l-rrangedv ,as' seen in'Figure 4 of the drawings.The

7. ay be expe the plates 10 is provided with a plurality of transversethreaded openings for receiving the headed bolts 11. The heads-of thebolts 11 abut the walls of the channels 6 which are free of the knives9, for clamping the plates 10 against the knives 9 upon rotation of thebolts ll-in-a manner to frictionally secure the knives in position. Theouter edge of each of the plates 10 is provided with aglongitudinalgroove 12.

' The form of cutter head illustrated in Figures 2 and 5' of thedrawings is for planing the outer'side of the staves and to this end thehead 1 is concaved as are also the cut- I ting edges 15 of the knives.The'cla mping bolts 16 which secure the knivesinposition are arranged asbestillustrated in Figure 5 of. the drawings and the bolts 11 whichseknives having the'concave cutting edges 15 as seen in Figures 2 and 5of the drawings are designated by the reference numeral 17. In allother'respects the form of the invention illustrated in Figures 2 and '5of the drawings is similar to that form of the in-' vention illustratedin Figures 1, 3, 4 and 6.

' After the knives are set. in their respective cutter heads, it hasbeen found'necessary that the same be jointed before the machine isplaced in operation and to facilitate this operation a jointing toolismounted in position: on the supporting frame 1 for operative e'n{gagement with the cutting edges of the knives.

This jointer is designated generally by the reference numeral 18.

As will be readily apparent, the knives 'ditio'usly ad usted and securedin position inthe cutter heads. A cutter headin accordance with thisinvention has been found to practically eliminate torn Sta-V88 and wasteof timber; It will further readily'ap arent that/the cutter headsconstitutingthis invention conform substantially to the cross sectional'shape'to which the staves 'are to be cut or planed] While but fourknives have been shownmountedin position in the heads any desired numberof claimed.

What is claimed is A device of the character described comprising a headhaving a longitudinal channel therein, the inner wall of the channelhavin a deep longitudinal groove in one side t ereof, and a shallowgroove having one side opening out into the deep groove, theoppositeside of the shallow groove forming a shoulder at its junction with therest of said inner wall, a knife disposed longitudinally in"thechannelin abutting engagement with a side wall of the channel and having itsinner ed e located in the deep groove, La pressure. p ate in the channeland having its inner edge located in the shallow groove, and operativelyengageable with the knife, said pressure plate being provided with aplurality of threaded, transverse openings, and headed bolts threadedinto the openings and having their heads engageable with a side wall ofthe channel for engaging the pressure plate against the knife uponrotation of the bolts in one direction in a manner.

to frictionally clamp the knife in position, the outer edge of thepressure plate having a longitudinal groove therein.

In testimony whereof we aflix our signa- EDWARD R. NORTON.

AMOS G. WHEELER.

fall within the scope of the invention as

